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Linux-2.6.12-rc2
[linux-2.6/next.git] / drivers / char / agp / ali-agp.c
blobc86a22c5499be93d02551fc3bd6ec7013328864b
1 /*
2 * ALi AGPGART routines.
3 */
4
5 #include <linux/types.h>
6 #include <linux/module.h>
7 #include <linux/pci.h>
8 #include <linux/init.h>
9 #include <linux/agp_backend.h>
10 #include "agp.h"
11
12 #define ALI_AGPCTRL 0xb8
13 #define ALI_ATTBASE 0xbc
14 #define ALI_TLBCTRL 0xc0
15 #define ALI_TAGCTRL 0xc4
16 #define ALI_CACHE_FLUSH_CTRL 0xD0
17 #define ALI_CACHE_FLUSH_ADDR_MASK 0xFFFFF000
18 #define ALI_CACHE_FLUSH_EN 0x100
19
20 static int ali_fetch_size(void)
21 {
22 int i;
23 u32 temp;
24 struct aper_size_info_32 *values;
25
26 pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp);
27 temp &= ~(0xfffffff0);
28 values = A_SIZE_32(agp_bridge->driver->aperture_sizes);
29
30 for (i = 0; i < agp_bridge->driver->num_aperture_sizes; i++) {
31 if (temp == values[i].size_value) {
32 agp_bridge->previous_size =
33 agp_bridge->current_size = (void *) (values + i);
34 agp_bridge->aperture_size_idx = i;
35 return values[i].size;
36 }
37 }
38
39 return 0;
40 }
41
42 static void ali_tlbflush(struct agp_memory *mem)
43 {
44 u32 temp;
45
46 pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
47 temp &= 0xfffffff0;
48 temp |= (1<<0 | 1<<1);
49 pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL, temp);
50 }
51
52 static void ali_cleanup(void)
53 {
54 struct aper_size_info_32 *previous_size;
55 u32 temp;
56
57 previous_size = A_SIZE_32(agp_bridge->previous_size);
58
59 pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
60 // clear tag
61 pci_write_config_dword(agp_bridge->dev, ALI_TAGCTRL,
62 ((temp & 0xffffff00) | 0x00000001|0x00000002));
63
64 pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp);
65 pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE,
66 ((temp & 0x00000ff0) | previous_size->size_value));
67 }
68
69 static int ali_configure(void)
70 {
71 u32 temp;
72 struct aper_size_info_32 *current_size;
73
74 current_size = A_SIZE_32(agp_bridge->current_size);
75
76 /* aperture size and gatt addr */
77 pci_read_config_dword(agp_bridge->dev, ALI_ATTBASE, &temp);
78 temp = (((temp & 0x00000ff0) | (agp_bridge->gatt_bus_addr & 0xfffff000))
79 | (current_size->size_value & 0xf));
80 pci_write_config_dword(agp_bridge->dev, ALI_ATTBASE, temp);
81
82 /* tlb control */
83 pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
84 pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, ((temp & 0xffffff00) | 0x00000010));
85
86 /* address to map to */
87 pci_read_config_dword(agp_bridge->dev, AGP_APBASE, &temp);
88 agp_bridge->gart_bus_addr = (temp & PCI_BASE_ADDRESS_MEM_MASK);
89
90 #if 0
91 if (agp_bridge->type == ALI_M1541) {
92 u32 nlvm_addr = 0;
93
94 switch (current_size->size_value) {
95 case 0: break;
96 case 1: nlvm_addr = 0x100000;break;
97 case 2: nlvm_addr = 0x200000;break;
98 case 3: nlvm_addr = 0x400000;break;
99 case 4: nlvm_addr = 0x800000;break;
100 case 6: nlvm_addr = 0x1000000;break;
101 case 7: nlvm_addr = 0x2000000;break;
102 case 8: nlvm_addr = 0x4000000;break;
103 case 9: nlvm_addr = 0x8000000;break;
104 case 10: nlvm_addr = 0x10000000;break;
105 default: break;
106 }
107 nlvm_addr--;
108 nlvm_addr&=0xfff00000;
109
110 nlvm_addr+= agp_bridge->gart_bus_addr;
111 nlvm_addr|=(agp_bridge->gart_bus_addr>>12);
112 printk(KERN_INFO PFX "nlvm top &base = %8x\n",nlvm_addr);
113 }
114 #endif
115
116 pci_read_config_dword(agp_bridge->dev, ALI_TLBCTRL, &temp);
117 temp &= 0xffffff7f; //enable TLB
118 pci_write_config_dword(agp_bridge->dev, ALI_TLBCTRL, temp);
119
120 return 0;
121 }
122
123
124 static void m1541_cache_flush(void)
125 {
126 int i, page_count;
127 u32 temp;
128
129 global_cache_flush();
130
131 page_count = 1 << A_SIZE_32(agp_bridge->current_size)->page_order;
132 for (i = 0; i < PAGE_SIZE * page_count; i += PAGE_SIZE) {
133 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
134 &temp);
135 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
136 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
137 (agp_bridge->gatt_bus_addr + i)) |
138 ALI_CACHE_FLUSH_EN));
139 }
140 }
141
142 static void *m1541_alloc_page(struct agp_bridge_data *bridge)
143 {
144 void *addr = agp_generic_alloc_page(agp_bridge);
145 u32 temp;
146
147 if (!addr)
148 return NULL;
149
150 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
151 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
152 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
153 virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN ));
154 return addr;
155 }
156
157 static void ali_destroy_page(void * addr)
158 {
159 if (addr) {
160 global_cache_flush(); /* is this really needed? --hch */
161 agp_generic_destroy_page(addr);
162 }
163 }
164
165 static void m1541_destroy_page(void * addr)
166 {
167 u32 temp;
168
169 if (addr == NULL)
170 return;
171
172 global_cache_flush();
173
174 pci_read_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL, &temp);
175 pci_write_config_dword(agp_bridge->dev, ALI_CACHE_FLUSH_CTRL,
176 (((temp & ALI_CACHE_FLUSH_ADDR_MASK) |
177 virt_to_phys(addr)) | ALI_CACHE_FLUSH_EN));
178 agp_generic_destroy_page(addr);
179 }
180
181
182 /* Setup function */
183
184 static struct aper_size_info_32 ali_generic_sizes[7] =
185 {
186 {256, 65536, 6, 10},
187 {128, 32768, 5, 9},
188 {64, 16384, 4, 8},
189 {32, 8192, 3, 7},
190 {16, 4096, 2, 6},
191 {8, 2048, 1, 4},
192 {4, 1024, 0, 3}
193 };
194
195 struct agp_bridge_driver ali_generic_bridge = {
196 .owner = THIS_MODULE,
197 .aperture_sizes = ali_generic_sizes,
198 .size_type = U32_APER_SIZE,
199 .num_aperture_sizes = 7,
200 .configure = ali_configure,
201 .fetch_size = ali_fetch_size,
202 .cleanup = ali_cleanup,
203 .tlb_flush = ali_tlbflush,
204 .mask_memory = agp_generic_mask_memory,
205 .masks = NULL,
206 .agp_enable = agp_generic_enable,
207 .cache_flush = global_cache_flush,
208 .create_gatt_table = agp_generic_create_gatt_table,
209 .free_gatt_table = agp_generic_free_gatt_table,
210 .insert_memory = agp_generic_insert_memory,
211 .remove_memory = agp_generic_remove_memory,
212 .alloc_by_type = agp_generic_alloc_by_type,
213 .free_by_type = agp_generic_free_by_type,
214 .agp_alloc_page = agp_generic_alloc_page,
215 .agp_destroy_page = ali_destroy_page,
216 };
217
218 struct agp_bridge_driver ali_m1541_bridge = {
219 .owner = THIS_MODULE,
220 .aperture_sizes = ali_generic_sizes,
221 .size_type = U32_APER_SIZE,
222 .num_aperture_sizes = 7,
223 .configure = ali_configure,
224 .fetch_size = ali_fetch_size,
225 .cleanup = ali_cleanup,
226 .tlb_flush = ali_tlbflush,
227 .mask_memory = agp_generic_mask_memory,
228 .masks = NULL,
229 .agp_enable = agp_generic_enable,
230 .cache_flush = m1541_cache_flush,
231 .create_gatt_table = agp_generic_create_gatt_table,
232 .free_gatt_table = agp_generic_free_gatt_table,
233 .insert_memory = agp_generic_insert_memory,
234 .remove_memory = agp_generic_remove_memory,
235 .alloc_by_type = agp_generic_alloc_by_type,
236 .free_by_type = agp_generic_free_by_type,
237 .agp_alloc_page = m1541_alloc_page,
238 .agp_destroy_page = m1541_destroy_page,
239 };
240
241
242 static struct agp_device_ids ali_agp_device_ids[] __devinitdata =
243 {
244 {
245 .device_id = PCI_DEVICE_ID_AL_M1541,
246 .chipset_name = "M1541",
247 },
248 {
249 .device_id = PCI_DEVICE_ID_AL_M1621,
250 .chipset_name = "M1621",
251 },
252 {
253 .device_id = PCI_DEVICE_ID_AL_M1631,
254 .chipset_name = "M1631",
255 },
256 {
257 .device_id = PCI_DEVICE_ID_AL_M1632,
258 .chipset_name = "M1632",
259 },
260 {
261 .device_id = PCI_DEVICE_ID_AL_M1641,
262 .chipset_name = "M1641",
263 },
264 {
265 .device_id = PCI_DEVICE_ID_AL_M1644,
266 .chipset_name = "M1644",
267 },
268 {
269 .device_id = PCI_DEVICE_ID_AL_M1647,
270 .chipset_name = "M1647",
271 },
272 {
273 .device_id = PCI_DEVICE_ID_AL_M1651,
274 .chipset_name = "M1651",
275 },
276 {
277 .device_id = PCI_DEVICE_ID_AL_M1671,
278 .chipset_name = "M1671",
279 },
280 {
281 .device_id = PCI_DEVICE_ID_AL_M1681,
282 .chipset_name = "M1681",
283 },
284 {
285 .device_id = PCI_DEVICE_ID_AL_M1683,
286 .chipset_name = "M1683",
287 },
288
289 { }, /* dummy final entry, always present */
290 };
291
292 static int __devinit agp_ali_probe(struct pci_dev *pdev,
293 const struct pci_device_id *ent)
294 {
295 struct agp_device_ids *devs = ali_agp_device_ids;
296 struct agp_bridge_data *bridge;
297 u8 hidden_1621_id, cap_ptr;
298 int j;
299
300 cap_ptr = pci_find_capability(pdev, PCI_CAP_ID_AGP);
301 if (!cap_ptr)
302 return -ENODEV;
303
304 /* probe for known chipsets */
305 for (j = 0; devs[j].chipset_name; j++) {
306 if (pdev->device == devs[j].device_id)
307 goto found;
308 }
309
310 printk(KERN_ERR PFX "Unsupported ALi chipset (device id: %04x)\n",
311 pdev->device);
312 return -ENODEV;
313
314
315 found:
316 bridge = agp_alloc_bridge();
317 if (!bridge)
318 return -ENOMEM;
319
320 bridge->dev = pdev;
321 bridge->capndx = cap_ptr;
322
323 switch (pdev->device) {
324 case PCI_DEVICE_ID_AL_M1541:
325 bridge->driver = &ali_m1541_bridge;
326 break;
327 case PCI_DEVICE_ID_AL_M1621:
328 pci_read_config_byte(pdev, 0xFB, &hidden_1621_id);
329 switch (hidden_1621_id) {
330 case 0x31:
331 devs[j].chipset_name = "M1631";
332 break;
333 case 0x32:
334 devs[j].chipset_name = "M1632";
335 break;
336 case 0x41:
337 devs[j].chipset_name = "M1641";
338 break;
339 case 0x43:
340 devs[j].chipset_name = "M????";
341 break;
342 case 0x47:
343 devs[j].chipset_name = "M1647";
344 break;
345 case 0x51:
346 devs[j].chipset_name = "M1651";
347 break;
348 default:
349 break;
350 }
351 /*FALLTHROUGH*/
352 default:
353 bridge->driver = &ali_generic_bridge;
354 }
355
356 printk(KERN_INFO PFX "Detected ALi %s chipset\n",
357 devs[j].chipset_name);
358
359 /* Fill in the mode register */
360 pci_read_config_dword(pdev,
361 bridge->capndx+PCI_AGP_STATUS,
362 &bridge->mode);
363
364 pci_set_drvdata(pdev, bridge);
365 return agp_add_bridge(bridge);
366 }
367
368 static void __devexit agp_ali_remove(struct pci_dev *pdev)
369 {
370 struct agp_bridge_data *bridge = pci_get_drvdata(pdev);
371
372 agp_remove_bridge(bridge);
373 agp_put_bridge(bridge);
374 }
375
376 static struct pci_device_id agp_ali_pci_table[] = {
377 {
378 .class = (PCI_CLASS_BRIDGE_HOST << 8),
379 .class_mask = ~0,
380 .vendor = PCI_VENDOR_ID_AL,
381 .device = PCI_ANY_ID,
382 .subvendor = PCI_ANY_ID,
383 .subdevice = PCI_ANY_ID,
384 },
385 { }
386 };
387
388 MODULE_DEVICE_TABLE(pci, agp_ali_pci_table);
389
390 static struct pci_driver agp_ali_pci_driver = {
391 .name = "agpgart-ali",
392 .id_table = agp_ali_pci_table,
393 .probe = agp_ali_probe,
394 .remove = agp_ali_remove,
395 };
396
397 static int __init agp_ali_init(void)
398 {
399 if (agp_off)
400 return -EINVAL;
401 return pci_register_driver(&agp_ali_pci_driver);
402 }
403
404 static void __exit agp_ali_cleanup(void)
405 {
406 pci_unregister_driver(&agp_ali_pci_driver);
407 }
408
409 module_init(agp_ali_init);
410 module_exit(agp_ali_cleanup);
411
412 MODULE_AUTHOR("Dave Jones <davej@codemonkey.org.uk>");
413 MODULE_LICENSE("GPL and additional rights");
414
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